Combine harvester self-adaptive cleaning control apparatus and self-adaptive cleaning method thereof

ABSTRACT

A combine harvester self-adaptive cleaning control apparatus, includes a return plate, a cleaning sieve, a cleaning centrifugal blower, an impurity collection and stirring auger, a grain collection and stirring auger, a cleaning grain loss monitoring sensor, a grain tank grain impurity rate automatic monitoring apparatus, and an on-line monitoring and control system. The on-line monitoring and control system is connected to the cleaning centrifugal blower, the cleaning grain loss monitoring sensor, the grain tank grain impurity rate automatic monitoring apparatus, and a power driving mechanism of a louver sieve having an adjustable opening. Also disclosed is a self-adaptive cleaning method of the cleaning apparatus which can automatically adjust various working parameters according to a working quality of a working process, improve production efficiency, control failure rate, and improve a down-time working time for the apparatus.

TECHNICAL FIELD

The present invention relates to a cleaning device design and adaptive control field in combine harvesters, and more particularly to a combined harvester with a multi-duct cleaning apparatus and an adaptive cleaning method.

BACKGROUND TECHNIQUE

The cleaning device is the “digestive system” of the combine harvester, which is the core working part that affects the quality, efficiency and adaptability of the whole machine significantly. Most of the largest rice combine harvesters in China use the traditional wind-sieve cleaning device (single-channel centrifugal fan+double-layer vibrating screen), single-channel centrifugal fan was used to produce clear air, using the difference in suspension velocity among grains, short straws, chaff and small amount of light miscellaneous, etc.), and combined with the double-layer vibrating weaving sieve or fish scale sieve to complete the separation of grains and straws, miscellaneous and so on. The results show that the traditional wind sieve cleaning device has become the main limitation factor to the development of large-scale rice combine harvesters in China. The concrete manifestation is that the high water content of high-yield super rice is high, and the floating rate of each component is staggered. It is difficult to quickly penetrate the grains, which seriously restricts the performance and efficiency of the cleaning device. The traditional cleaning device cannot adapt to the continuous improvement of crop varieties, rapid increase in yield requirements.

Combine harvesters such as 988 STS (John Deere), 2388 (CASE), CR980 (New Holland) and TUCANO 470 (CLAAS) have been developed in recent years, such as John Deere, CASE, New Holland, CLAAS and other large and medium-sized combine harvesters, but these models are mainly used for harvesting wheat, soybean, rape and other dry crops, the general use of wheeled chassis, the length of the feeder are distribute within 6-10 m, dead weight were about 8-10 tones, they cannot adapt to China's rice characteristics, the southern super-rice producing areas of 10-15 acres of plots size and deep mud angle operating environment. In addition, the cleaning device using double fan (or large diameter double duct fan), pre-selected jitter plate (with a corrugated surface), return conveyor plate (with a corrugated surface), multi-layer screening screen and other composite structure, large size, cannot be applied to China's rice combine harvesters. Half-feeding combine harvesters made by Japan and South Korea have their own structural constraints, cannot achieve large-scale, operational efficiency and harvest adaptability. More importantly, although Europe and the United States and other developed countries produce large-scale combine harvester products, their relevant test data, design theory and methods are always consider to be company's core secrets. In short, there is no relevant theory and method can he used to guide the designing of China's large feeding rice harvesters and its cleaning device, and because of the specific characteristics of the operating object itself in China, we cannot borrow foreign product design experience.

In addition, due to the significant differences in the working conditions of the combine harvester, the operating conditions are ever-changing and the operating environment is extremely complicated. The performance of the cleaning device is significantly affected. The structure and motion parameters of the conventional cleaning device can only be carried out by manual adjustment, the working parameters cannot be adjusted based on the objects and the environment changes automatically to ensure job performance, the harvesting adaptability is poor. In the protection of the performance of the conditions, the operating parameters can be adjusted according to operating conditions to adjust the inevitable trend of technological development. Throughout the advanced combine harvesters, electronic information technology has been widely used on it, the joint harvesting function according to the operation process of the quality of the work automatically adjust the various operating parameters, while improving the production efficiency, the failure rate control in a certain range, While greatly improving the machine's trouble-free working hours. Compared with the advanced combine harvesters of European and American multinational companies, China's grain combine harvester is mostly equipped with only a small number of alarm devices, the general lack of working parameters and operating performance monitoring, working parameters such as electric/automatic adjustment and other intelligent monitoring device, making the machine operating performance is unstable, operating efficiency mainly depends on the skill level of the machine, and the handling of large, plug the fault frequently, the trouble-free working time less than one-fifth of foreign models, cannot meet the scale of China's rice Production and rice oil (wheat) rotation area grab and other operating requirements. In recent years, domestic and foreign scholars have done a lot of research work on the intelligent technology of combine harvester, but most of the research is only a research on the monitoring or prediction model of single working parameters and operating performance parameters, and not based on the current operation Parameter value of the relevant parts of the feedback control and multi-operation parameters of the fusion control research is relatively small.

In addition, the relevant intelligent technology research towards the cleaning equipment performance monitoring just focused on the grain loss monitoring, another important performance indicator-grain impurity ratio without taking into account. Therefore, the performance of the grain impurity ratio monitoring device is a determine factor to achieve adaptive control of the cleaning device, the literature search found that there has not yet seen a publication about this so far in China

INVENTION CONTENTS

To achieve the above object, the present invention provides a combined harvester adaptive cleaning control apparatus and an adaptive cleaning control method.

The present invention is achieved by the following technical means: A combined harvester adaptive cleaning device, which composed of return plate, a sieve, a miscellaneous auger, grain auger, grain loss monitoring sensor centrifugal fan, and grain impurity ratio monitoring device. The grain loss monitoring sensor is located at the tail of the sieve, he return plate and the miscellaneous auger are located on the underside of the tail of the vibrating screen, and the grains tank are collected with the grain auger and the bottom of the centrifugal fan is flush. Centrifugal fan is located on the underside of the sieve, and the front side of the cleaning centrifugal fan is flush with the front side of the sieve; the sieve comprises an upper jitter plate, a lower jitter plate, an adjustable opening chaff, an upper vibrating screen, a serrated tail sieve, a lower vibrating screen drive shaft, a lower vibrating screen, a lower vibrating screen driving hydraulic motor, the upper jitter plate is located on the front side of the adjustable scale sieve, the adjustable scale chaff is located on the front side of the upper vibrating screen, the adjustable scale chaff is located on the front of the upper vibrating screen, the serrated tail sieve is located on the tail of upper vibrating screen, the power driver of adjustable scale sieve is locates in the tail of sieve. The lower shaker driving hydraulic motor is installed in the sieve, vibrating screen drive shaft is connected to the lower vibrating screen driving hydraulic motor by means of a coupling (2014) and a lower vibrating screen drive shaft.

Characterized in that it further comprises of an on-line monitoring and control system, the input of claimed on-line monitoring and control system and Claimed grain loss monitoring sensor, Claimed lower vibrating screen driving hydraulic motor, and the output of the on-line monitoring and control system is connected to the power drive mechanism of the adjustable scale fish scale sieve, claimed cleaning centrifugal fan being connected for controlling the opening degree of claimed fish scale sieve and the air intake and outlet direction of claimed cleaning centrifugal fan.

A combined harvester adaptive cleaning device according to claimed 1, characterized in that claimed fish scale opening adjusting mechanism comprises a connecting piece, the first connecting rod, direction changing element, the second link, a connecting plate, a direct current electric cylinder, a linear displacement sensor, and support plate, the first connecting pin, a supporting shaft and the second connecting pin. The support plate is mounted on a side plate below the serrated tail sieve of the cleaning screen, the support shaft, one end being fixed to the left of support plate. Direction switch is fixed to the left side of the support plate by fasteners at one end of the support shaft on the side plate below the zigzag tail curtain, and the direction switch is connected to the first link through a first connecting pin, and the direction switching means is connected to the first connecting rod is connected to the second link through a second connecting pin, and the other end of the second link is mounted with a rod end bearing, The connecting pin connects the rod end bearing of the second link to the rod end bearing on the extension shaft of the DC electric cylinder, and the DC electric cylinder is mounted on the support is mounted on the inside of the DC motor cylinder on the support plate and is parallel to the DC motor cylinder, and the straight line displacement sensor The output shaft of the displacement sensor (205-7) is connected with the output shaft of the DC electric cylinder (205-6) through the connecting plate, and the rectangular plate is welded at the lower edge of the adjustable scale sieve, the first link passes through the serrated tail sieve in the clear screen and is connected to the rectangular hole beneath the fish scale screen by fasteners. The DC electric cylinder is connected with the on-line monitoring and control system through the signal line. The on-line monitoring and control system realizes the driving direction changing member by controlling the movement of the DC electric cylinder. The first connecting rod movement to complete the adjustment opening of fish scale sieve.

A combined harvester adaptive cleaning control apparatus according to claim 1 or 2, characterized in that Claimed cleaning centrifugal fan comprises a fan inlet opening adjustment mechanism, a fan blade drive, the lower outlet, a sub-wind plate I and the first angle adjusting mechanism, a sub-wind plate II and the second angle adjusting mechanism. The upper outlet is on the upper part of the upper vibrating screen, the lower outlet composes of a sub-wind plate I and the first angle adjusting mechanism, and the sub-wind plate II, the sub-wind plate I and the first angle adjusting mechanism pass through the center of the upper vibrating screen, a sub-wind plate II and the second angle adjusting mechanism extending line intersecting the tail of the lower vibrating screen, the fan inlet opening adjusting mechanism, the fan blade drive mechanism. The angle adjustment mechanism and the second angle adjustment mechanism are connected to the output of the on-line monitoring and control system, respectively.

A combined harvester adaptive cleaning device according to claim 3, characterized in that Claimed fan blade drive mechanism comprises a hydraulic motor, a hydraulic motor mounting plate, a fan blade, a fan shaft and a bearing seat; the fan blade are uniformly mounted on the fan shaft (502-5), the fan shaft is mounted on the frame through the bearing seat at both ends, the hydraulic motor mounting plate is bolted to the frame, the hydraulic motor. The center line of the output shaft of the hydraulic motor coincides with the center line of the fan shaft, and the fan shaft is connected with the extension shaft of the hydraulic motor; the signal line of the hydraulic motor connected with the on-line monitoring and control system, and the on-line monitoring and control system.

A combined harvester adaptive cleaning device according to claim 3, characterized in that Claimed fan inlet opening adjustment mechanism comprises a DC electric push rod, the upper connecting hole of the half moon plate, a half-moon shield plate, the lower connecting hole of the half moon plate; the DC electric push rod is mounted on the side wall of the upper outlet. The half-moon shield plate connects the DC electric push rod though the upper connecting hole of the half moon plate; the half-moon shield plate connects outer wall of the blower outlet of the fan by the lower connecting hole of the half moon plate; the DC electric push rod is connected to the on-line monitoring and control system via a signal line, and the movement of the shaft is controlled by controlling the movement of the DC electric push rod around the half-moon shield plate connection hole (501-4) rotation to control the fan air inlet air volume.

A combined harvester adaptive cleaning device according to claim 3, characterized in that Claimed first angle adjusting mechanism comprises a lifting ear I, a stepping motor, A rotating rod, a sub-fan I, a chute, a hanging ear II, a stepping motor support frame, the stepping motor is mounted on the wall by a stepping motor support frame, and one end of the rotary lever, the lifting lug I is fixed to the output shaft of the stepping motor, and the crankshaft and the other end of the rotary rod are connected to the hanging ear II via a circular slide rail, and the stepping motor The line is connected to the on-line monitoring and control system, and the stepping motor realizes forward or reverse rotation under the control of the on-line monitoring and control system, thereby driving the sub-wind plate I To achieve the adjustment of the angle of the wind plate I.

A combined harvester adaptive cleaning device according to claim 3, characterized in that Claimed second angle adjusting mechanism comprises a lifting ear I a stepping motor, chute 1, a chute 2, a lifting lug 2, a stepping motor support frame, a wind turbine, and the stepping motor is mounted on the wall by a stepping motor support frame, and one end of the rotary lever is fixed to the output shaft of the stepping motor on the output shaft of the intake motor, and the crankshaft The other end of the slide bar and the rotary lever is connected to the lifting lug 2 via a circular guide, and the stepping motor The line is connected to the on-line monitoring and control system, and the stepping motor realizes forward or reverse rotation under the control of the on-line monitoring and control system, thereby driving the sub-winch plate II To achieve the adjustment of the angle of wind plate II.

A combined harvester adaptive cleaning device according to claim 1 or 2, characterized in hat Claimed joint harvester grain box grain containing rate automatic monitoring means comprises a grain extraction means, a transport mechanism, a machine vision section and a processor; The grain extraction mechanism includes a guide groove, a bracket, a sampling drum, a hopper, a DC stepping motor, a coupling, a connecting frame. A hopper is located on the bottom surface of guide groove, sampling drum is supported by a bracket located within the hopper and the surface of the sampling roller has at least one groove which is tangent to the rectangular hole when rotated, and one end of the sampling roller is connected to the DC stepping motor (618) through a coupling;

Claimed grain transfer mechanism comprising at least a conveyor platform carrying a grain sample, a transmission means capable of transporting the food product to the transport platform.

The machine vision part is composed of a support plate, a light box, a light source and a visible light CCD camera; the support plate is welded to the bracket, the support plate having a vertical plate perpendicular to the conveyor platform, the gap between the lower edge of the vertical plate and the conveyor platform being slightly greater than the height of the harvested grain of the harvester, the visible light CCD camera being located in the light box; the processor comprises a current controller, a DC stepper motor control is connected with the image preprocessing unit, the light source is connected with the current controller, and the image is connected with the image preprocessing unit, the light source is connected with the image preprocessing unit, the preprocessing unit is used for converting the image to be measured photographed by the visible CCD camera into a binarized image for dividing the residual feature image into the binarized image and extracting the spurious Morphological and color characteristics and separating the miscellaneous grains from the grains, the miscellaneous count units being used to count the fathals in the image; The conveyor platform of the grain transfer mechanism is a feed table, which comprises a plate spring, a core coil, an armature, a base, the feeding platform, the feeding platform is fixed to the base by a plate spring which is fixed to the lower surface of the base and the feed table, respectively, The coil is connected to the current controller is fixed under the tail of the conveyor platform; and the grain extraction mechanism further comprises a warehouse wall exciter provided on the bottom surface of the hopper, the width of the hopper coincides with the width of the feed table;

The processor is connected to the on-line monitoring and control system via a signal line.

A combined harvester adaptive cleaning device according to claim 1 or 2, characterized in that the distance between dither plate and upper vibrating screen is in the range of 0.050˜0.10 in, the tail of the jitter plate and upper vibrating screen is located on the upper side of the lower vibrating screen by 0.10 m to 0.15 m, and the outer width of the upper vibrating screen and the lower vibrating screen is 1.2˜1.5 m, the length of the return plate is 0.8˜1.5 mm, the width is 1.0˜1.5 mm.

A method for adaptive selection using a combined harvester adaptive cleaning control device, comprising of the following steps:

S1: In the process of joint harvesting machine, on-line monitoring and control system Real-time access to clear the centrifugal wind under the outlet of the wind plate I tilt angle, the next outlet wind plate II angle, fan speed, fan into vibration frequency, fish scale sieve opening, grain removal loss rate, grain box grain containing rate to characterize the multi-channel adaptive cleaning device operating status;

S2: multi-channel adaptive cleaning device operating status on-line monitoring and control system abnormal data on the monitoring data replacement, missing data padding, data pretreatment to eliminate random, uncertain factors on the follow-up data The impact of analysis;

S3: the on-line monitoring and control system real-time access to clear the centrifugal wind under the outlet of the wind board I tilt, the next outlet wind plate II tilt, fan speed, fan inlet opening, The time series of the parameters of the sieve, the frequency of the fish scale, the rate of grain removal, the time series of the grains in the grain box are considered as the associated variables. Based on the monitoring data preprocessing, the forecast validity is used as the evaluation criterion of the prediction accuracy, The time series correlation coefficients of the performance parameters of the multivariate cleaning device are determined by the chaotic phase space reconstruction method, and the reconstructed dimensions of the time series samples are combined with the gray correlation cluster analysis. Method and the Gaussian process regression model, the optimal reconstruction dimension of the time series samples of the performance parameters of the cleaning device is determined dynamically.

S4: The time series of the performance parameters of the cleaning device is decomposed into the superposition of the intrinsic instantaneous function (IMF) components by the empirical mode decomposition (EMD) using the Hilbert-Huang transform (HHT) The instantaneous characteristics of the time series of the performance parameters of the cleaning device are used to establish the adaptive diction model of the performance parameters of the cleaning device.

S5: The predictive value of the adaptive prediction model is selected as the sample input, and the variable fitting residual is used as the sample output. The adaptive prediction model of the performance parameters of the cleaning device is obtained by the multi-core support vector regression machine (MSVR) Of the fitting residuals for regression analysis, and further correction of the predicted value;

S6: Multi-channel adaptive cleaning device operating status online monitoring and control system (7), through the multi-core support vector regression machine (MSVR) model of the revised selection of the performance parameters of the parameters of the input value for the input variable, the application Fuzzy control theory, real-time output of the corresponding control signal on the multi-channel adaptive cleaning device to select the centrifugal wind (5) under the outlet of the wind plate I tilt angle, the next outlet outlet wind plate II angle, fan speed, fan (2) the vibration frequency of the sieve (2) and the actuating element of each regulating mechanism of the fish scale opening, and real-time adjustment of the working parameters of the multi-channel adaptive cleaning device is completed so that the multi- The performance parameters of the adaptive cleaning device are distributed within a reasonable range.

The beneficial effects of the present invention are:

(1) The patent for China restricts large amount of feed rice combine harvester core components—windy cleaning apparatus operating performance bottleneck, efficiency and adaptability of the harvest, the present patent application proposed Road cleaning apparatus and Method for Adaptive Cleaning, Cleaning Device CAN Automatically the ADJUST Various Operating the Parameters During Operation ACCORDING to at The at Quality of Operations, Improve Production Efficiency, at The failure Rate Will BE Controlled Within A Certain the Range, the while Greatly Improving at The Whole Machine Time the BETWEEN failures The. (2) windy road cleaning apparatus of the present patent proposed cleaning method and adaptive rice, wheat, canola, soybeans and other crops cleaning devices may be used in the technological advancement of the harvest machinery industry largely provide theoretical, technical and logistical support for China's food security.

DESCRIPTION OF THE DRAWINGS

FIG. 1 is a combine harvester windy road cleaning apparatus main view.

FIG. 2 is a combine harvester windy road cleaning means cleaning the main screen view.

FIG. 3 is a cleaning sieve vibration frequency adjustment mechanism left side view.

FIG. 4 is a clear scale sieve opening adjustment device schematic.

FIG. 5 is a clear scale sieve opening adjustment device is mounted position in the main view.

FIG. 6 is a DC electric cylinders and linear displacement transducer relative position in the main view.

FIG. 7 is a windy road cleaning fan front view.

FIG. 8 is a cleaning centrifugal fan drive left view.

FIG. 9 is cleaning the fan inlet opening adjustment mechanism front view.

FIG. 10 is a divider plate I front view angle adjustment mechanism.

FIG. 11 is a front view of the air board I.

FIG. 12 is a divider plate I left view angle adjustment mechanism.

FIG. 13 is a divider plate II front view angle adjustment mechanism.

FIG. 14 is a front view of the air hoard II.

FIG. 15 is a divider plate II left view angle adjustment mechanism.

FIG. 16 is a combine harvester grain tank Grain impurity rate automatic monitoring devices left side view.

FIG. 17 is a combine harvester grain tank Grain impurity rate automatic monitoring devices front view.

Numerals 1: the return plate, 2-sieve, 3-tailing collecting auger, 4 grain auger, 5-centrifugal fan, 6-grain impurity ratio monitoring devices; 201-plate jitter, 202-jitter plate, 203-sieve scale, 204-vibration sieve, 205-sieve opening scale adjustment mechanism, 206-serrated tail screen, 207-cleaning grain loss monitoring sensors, 208-shaker drive shaft, 209-under the shaker, 2010-curved wind deflector, 2011-jitter panel driver hearing, 2012-air inlet, 2013-under shaker drive hydraulic motor, 2014-coupling; 205-1-connecting plate, 205-2-first link, 205-3-direction changing member, 205-4-second link, 205-5-webs, 205-6-DC electric cylinder, linear displacement 205-7-sensor support plate and 205-8, 205-9-first connecting pin, 205-10-support shaft, 205-11-second connector pin; 501-fan inlet opening adjustment mechanism, 502-Fan blades and 503-drive mechanism, volute, 504-under outlet, 505-air hoard angle adjustment mechanism and I, 506-II air board angle adjustment mechanism, 507-the outlet; 501-1-DC electric putter, 501-2-half-moon plate connecting hole, 501-3-half moon wind deflector shield, 501-4-lower connecting hole of wind shield plate, 502-1-hydraulic motors, hydraulic motors, 502-2-mounting plate, 502-3-couplings, 502-4-fan blades, 502-5-fan shaft, 502-6-hearing; 505-1, 505-2-stepping motor, 505-3 rotating lever, 505-4-divider plate II, 505-5-slide, 505-6-lug 2, 505-7-stepping motor support bracket, 505-8 cleaning machine wall fan; 506-1-lug 1, 506-2-stepping motor, 506-3-rotating rod, 506-4-divider plate, 506-5-slide, 506-6-lug 11, 506-7-stepping motor support bracket, 506-8-fan wall; 601-diversion channel, 602-bracket, 603-drum samples, 604-hopper, 605-the support plate, 606-feeding stations, 607-plate spring, 608-core-coil sheet, 609-armature base 610-, 611-baffles, 612-discharge port, 613 light boxes, 614-light 615-visible light CCD camera, 616-warehouse wall vibrator, 617-processor, 618-DC stepper motors, 619-couplings, 620-connecting frame, 621-the mounting holes, 7-line monitoring and control system.

DETAILED DESCRIPTION

Below in conjunction with the accompanying drawings and specific embodiments of the present invention will he further described, but the scope of the present invention is not limited thereto.

As FIG. 1 shown, multi-channe self-adaptive cleaning apparatus is consisted of return platel, sieve 2, tailing collecting auger 3, grain auger 4, centrifugal fan 5, grain impurity ratio monitoring devices 6 and multi-channel self-adaptive cleaning apparatus online monitoring with line monitoring and control system 7. Return platel is located up the sieve 2, tailing collecting auger 3 is located on the underside of the tail of the sieve2. Grain auger 4 is behind the ¼ length of sieve 2 and equals the bottom of centrifugal fan 5. The grains tank are collected with the grain auger 4 and the bottom of the centrifugal fan 5 is flush. Centrifugal fan 5 is located on the underside of the sieve 2. The front side of the cleaning centrifugal fan 5 is flush with the front side of the sieve 2.grain impurity ratio monitoring devices 6 is mounted on the outlet of grain auger 4.The length of grain cleaning equipment is 0.8˜1.5 m, the width of it is 1.0˜1.5 mm,the height of it is 0.6˜0.8 m. The length of return plate is 0.8˜1.5 m and the width of it is 1.0˜1.5 mm.

As FIG. 2 and FIG. 3 shown,the sieve 2 comprises an upper jitter plate 201, a under jitter plate 202, an adjustable sieve scale 203, an upper vibrating screen 204, a serrated tail sieve 206, a shaker drive shaft 208, a the lower shaker 209, curved wind deflector 2010, jitter panel driver hearing 2011, air inlet 2012. The upper jitter plate 201 is located on the front side of the adjustable sieve scale 203. The adjustable scale sieve 203 is located on the front side of the upper vibrating screen 204. The serrated tail sieve 206 is located on the tail of upper vibration screen 204. Sieve opening scale adjustment mechanism 205 is between vibration sieve 204 and the lower shaker 209. Power drive mechanism of sieve opening scale adjustment mechanism 205 is placed on the tail of sieve 2. Curved wind deflector 2010 is behind vibration sieve 204 and connect with the front of lower shaker 209. The front of curved wind deflector 2010 align the front of upper vibration sieve 204 in the horizontal direction. Air inlet 2012 is between upper jitter plate 201 and vibration sieve 204. Air inlet 2012 is in front of upper vibration sieve 204. The extending line of air inlet 2012 and upper vibration sieve 204 are parallel. Jitter panel driver bearing 2011 connects with upper jitter plate 201. Shaker drive shaft 208 is on the rear outside of sieve 2 and connects with the lower shaker 209. Under shaker drive hydraulic motor 2013 is mounted on the rear outside of seive 2 and fixed on the bracket of cleaning room. Vibrating screen drive shaft 208 is connected with under shaker drive hydraulic motor 2013 by coupling 2014. Cleaning grain loss monitoring sensors 207 is on the tail of seive 2. Lower shaker 209 has weaving structure. The length of sieve 2 is 2.0 m˜2.5 m, the width is 1.2 m˜1.5 m and the height is 0.6 m˜0.8 m. The distance between upper jitter plate 201 and vibration sieve 204 is 0.050 m˜0.10 m. The length of tail of upper jitter plate 201 and upper vibrating screen 204 overlapping is 0.5˜0.8 m. The vibration sieve 204 is located on the upper side of the lower vibrating screen 209 by 0.10 m to 0.15 m, and the outer width of the upper vibrating screen 204 and the lower vibrating screen 209 is 1.2˜1.5 m.

As FIG. 4, FIG. 5 and FIG. 6 shown,sieve opening scale adjustment mechanism 205 comprises a connecting piece 205-1, the first link 205-2, direction changing element 205-3, the second link 205-4, a connecting plate 205-5, a DC electric cylinder 205-6, a linear displacement sensor 205-7, support plate 205-8, the first connecting pin 205-9, a supporting shaft 205-10 and the second connecting pin 205-11. The support plate 205-8 is mounted on a side plate below the serrated tail sieve 206 of the cleaning screen 2. The support shaft 205-10 is fixed on the left of support plate 205-8. Direction switch 205-3 is fixed by fasteners at one end of the support shaft 205-10.The direction changing member 205-3 is connected to the first link 205-2 through a first connecting pin 205-9 and the direction changing member 205-3 is connected to the first fink 205-2 is connected to the second link 205-4 through a second connecting pin 205-11. The other end of the second link 205-4 is mounted with a rod end hearing. The connecting pin connects the rod end bearing of the second link 205-4 to the rod end bearing on the extension shaft of the DC electric cylinder 205-6.The DC electric cylinder 205-6 is mounted on the support plate 205-8 is mounted on the inside of the DC motor cylinder 205-6 on the support plate 205-8 and is parallel to the DC motor cylinder 205-6. The output shaft of the displacement sensor 205-7 is connected with the output shaft of the DC electric cylinder 205-6 through the connecting plate 205-5, and the rectangular plate is welded at the lower edge of the adjustable scale sieve 203. The first link 205-2 passes through the serrated tail sieve 206 in the sieve 2 and is connected to the rectangular hole beneath the fish scale screen 205-1 by fasteners. The DC electric cylinder 205-6 is connected with the on-line monitoring and control system 7 through the signal line. The on-line monitoring and control system 7 realizes the driving direction changing member by controlling the movement of the DC electric cylinder 205-6. The first connecting rod 205-3 movement to complete the adjustment opening of fish scale sieve.

As FIG. 7 shown,cleaning centrifugal fan 5 comprises a fan inlet opening adjustment mechanism 501, a volute 503, a lower outlet 504, a sub-wind plate I and the first angle adjusting mechanism 505, a sub-wind plate II and the second angle adjusting mechanism 506 and upper outlet 507. The upper outlet 507 is on the upper part of the upper vibrating screen 209.The lower outlet 504 composes of a sub-wind plate 1 and the first angle adjusting mechanism 505 and the sub-wind plate II 506. The sub-wind plate 1 and the first angle adjusting mechanism 505 pass through the center of the upper vibrating screen 204, a sub-wind plate II and the second angle adjusting mechanism 506 extending line intersecting the tail of the lower vibrating screen 209.

As FIG. 8 shown,fan blade drive mechanism comprises a hydraulic motor 502-1, a hydraulic motor mounting plate 502-2, a fan blade 502-4, a fan shaft 502-5 and a bearing seat 502-6; the fan blade 502-4 are uniformly mounted on the fan shaft 502-5 the fan shaft 502-5 is mounted on the frame through the bearing seat 502-6 at both ends, the hydraulic motor mounting plate 502-2 is bolted to the frame, the hydraulic motor 502-1. The center line of the output shaft of the hydraulic motor 502-1 coincides with the center line of the fan shaft 502-5, and the fan shaft 502-5 is connected with the extension shaft of the hydraulic motor 502-1; the signal line of the hydraulic motor 502-1 is connected with the on-line monitoring and control system 7, and the on-line monitoring and control system.The controller of hydraulic motor 502-1 is connected with multi-channel self-adaptive cleaning apparatus line monitoring and control system 8 by signal line. The controller of hydraulic motor 502-1 drives the related execution parts of hydraulic motor 502-1 to control the rotating speed. So, the rotating speed of centrifugal fan 5 can be controlled.

As FIG. 9 shown,fan inlet opening adjustment mechanism 501 comprises a DC electric push rod 501-1, the upper connecting hole of the half moon plate 501-2, a half-moon shield plate 501-3, the lower connecting hole of the half moon plate 501-4; the DC electric push rod 501-1 is mounted on the side wall of the upper outlet 507. The half-moon shield plate 501-3 connects the DC electric push rod 501-1 though the upper connecting hole of the half moon plate 501-2; the half-moon shield plate 501-3 connects outer wall of the blower outlet 504 of the fan by the lower connecting hole of the half moon plate 501-4; fan inlet opening adjustment mechanism 501-1 connects with multi-channel self-adaptive cleaning apparatus working surroundings line monitoring and control system 8 by signal lines. When the machine is working, the movement of the shaft is controlled by controlling the movement of the DC electric push rod 501-1 around the half-moon shield plate connection hole 501-4 rotation to control the fan air inlet air volume.

As FIG. 10, FIG. 11 and FIG. 12 shown, first angle adjusting mechanism 505 comprises a lifting ear I 505-1, a stepping motor 505-2, A rotating rod 505-3, a sub-fan 1 505-4, a chute 505-5, a hanging ear II 505-6, a stepping motor support frame 505-8, the stepping motor 505-2 is mounted on the wall 505-8 by a stepping motor support frame 505-7, and one end of the rotary lever 505-3, the lifting lug I 505-1 is fixed to the output shaft of the stepping motor 505-2, and the crankshaft 505-5) and the other end of the rotary rod 505-3 are connected to the hanging ear II 505-6 via a circular slide rail 505-5, and the stepping motor 505-2 The line is connected to the on-line monitoring and control system 7, and the stepping motor 505-2 realizes forward or reverse rotation under the control of the on-line monitoring and control system 7, thereby driving the sub-wind plate I 505-4 To achieve the adjustment of the angle of the wind plate I 505-4.

As FIG. 13, FIG. 14 and FIG. 15 shown,second angle adjusting mechanism 506 comprises a lifting ear I 506-1, a stepping motor 506-2, rotating plate 506-3, a chute 506-4, a chute 506-5, a lifting lug 2 506-6, a stepping motor support frame 506-7 and wind turbine 506-8. The stepping motor 506-2 is mounted on the wall 506-8 by a stepping motor support frame 506-7, and one end of the rotary lever 506-3 is fixed to the output shaft of the stepping motor 506-2 and the crankshaft 506-8. The output shaft of stepping motor 506-2 is fixed on the lug I 506-1. The other end of the slide bar 506-5 and the rotary lever 506-3 is connected to the lifting lug 2 506-6 by a circular guide 506-5, and the stepping motor 506-2. The line is connected to the on-line monitoring and control system 7. The stepping motor 506-2 realizes forward or reverse rotation under the control of the on-line monitoring and control system 7 thereby driving the sub-wind plate II 506-4 to achieve the adjustment of the angle of the wind plate II 506-4.

As FIG. 16 and FIG. 17 shown, joint harvester grain box grain containing rate automatic monitoring means 6 comprises a grain extraction means, A transport mechanism, a machine vision section and a processor 617. The grain extraction mechanism includes a guide groove 601, a bracket 602, a sampling drum 603, a hopper 604, a DC stepping motor 18, a coupling 19, a connecting frame 20. A hopper 604 is located on the bottom surface of guide groove 601, sampling drum 603 is supported by a bracket 602 located within the hopper 604 and the surface of the sampling roller 603 has at least one groove 603 which is tangent to the rectangular hole when rotated, and one end of the sampling roller 603 is connected to the DC stepping motor 618 through a coupling 619; The outlet of hopper 604 is on one side. Warehouse wall vibrator 616 is setted on the outside of hopper 604. The warehouse wall vibrator 616 vibrates the bottom of hopper 604 to make materials from hopper 604 to slide smoothly. The conveyor platform of the grain transfer mechanism is a feed table 606, which comprises a plate spring 607, a core coil 608, an armature 609 and a base 610. The feeding platform 606 is fixed to the base 610 by a plate spring 607 core-coil sheet 608 and armature base 609 are fixed to the lower surface of the base 610 and the feed table 606 respectively. The baffles 611 are fixed under the tail of the conveyor platform, and the sample is diverted. In order to prevent the material from scattering, it is preferable that the width of the hopper 604 coincides with the width of the feeding stations 606. The machine vision part is composed of a support plate 605, a light box 613, a light source 614 and a visible light CCD camera 615. The light box 613 is suspended from the support plate 605 and is on the top of transport platform. The support plate 605 is welded to the bracket 602. The support plate 605 having a vertical plate perpendicular to the conveyor platform, the gap between the lower edge of the vertical plate and the conveyor platform being slightly greater than the height of the harvested grain of the harvester. The visible light CCD camera 615 is located in the light box 613. The processor 617 comprises a current controller, a DC stepping motor controller, an image preprocessing unit, an image segmentation unit, a mismatch counting unit. Visible light CCD camera 614 and processor 617 are connected with multi-channel adaptive cleaning device operating status on-line monitoring and control system 7 by signal lines.The core-coil sheet 608 is connected to a current controller embedded in the control core coil 608 in the processor via a signal line. The frequency of the iron core coil 608 and the armature 609 is controlled by controlling the current on and off in the coil. So, the transmission speed of the grain sample on the grain transfer mechanism is controlled. The warehouse wall vibrator 616 is provided on the outside of the bottom surface of the hopper 604 and is connected to the current controller. The light 614 is connected to a current controller, and the visible light CCD camera 615 is connected to the image preprocessing unit via a data line. The image preprocessing unit is used for converting the image to be measured photographed by the visible CCD camera 615 into a binarized image. The image segmentation unit is used for dividing the residual feature image in the binarized image, extracting the morphological and color features of the miscellaneous matter and separating the miscellaneous grains from the grain. The hash count unit is used to count the mismatches in the image.

Adaptive selection using a combined harvester adaptive cleaning control device, comprising of the following steps:

(1) The grain extraction mechanism use DC stepper motor controller and DC stepper motor 18 to drive drum samples 603 turning.The grooves on the sampling drum 603 are scraped off the effluent from the food container of the combined harvester.The scraped material is conveyed through the hopper 604 to the conveying platform of the grain transfer mechanism, driven by the DC stepping motor 18.

(2) The visible light CCD camera 615 acquires the mismatched sample image sequence in real time and feeds it into the processor 617 when the transport platform is moved into the visible area of the visible light CCD camera 615.

(3) The image preprocessing unit converts the image to be measured into gray scale image and performs the mean filtering and median filtering. The Hough transform is used to remove the edge image and contrast enhancement to further remove the noise and enhance the image. Degree image into binarized image.

(4) The image segmentation unit divides the mismatched feature image by the distance transformation minima combination method and the watershed algorithm to extract the residual morphological features and color characteristics and separates the miscellaneous grains from the grains by morphological method.

(5) The mismatch counting unit counts the mismatches in the image using the method of “performing the eight neighborhood edge traces an the mismatched region and then filling the pixels inside the connected region” and then calculating the mismatches in the current detection sample content.

The working process of using self-adaptive cleaning apparatus to make self-adaptive clean is:

Firstly, mount the grain loss monitoring sensor on the trail of the seive bracket. Based on the mathematic relationship between the grain size of the selected grain and the distribution of grain in different areas of the sieve tail, the grain removal rate of the current multi-channel cleaning device was monitored in real time.Then,once the scraping of the sampling drum gradually fall onto the inclined wall of the hopper with continuous turning of DC stepper motor and the scraping material reaches the upper side of the grain transfer mechanism with constant vibration of the wall-wall exciter. The grain extraction mechanism of grain impurity ratio monitoring devices use DC stepper motor to drive drum samples turning. The grooves on the sampling drum are scraped off the effluent from the food container of the combined harvester.

Secondly, the grain transfer mechanism controls the grain sample to be conveyed at a constant speed in the machine vision part of the set lighting condition. Visible light CCD camera have miscellaneous samples of black and white image sequence at real-time and send into the computer when grain samples run around the place of visible light CCD camera. The image to measure taken by the CCD camera for the mean filter, median filter, image sharpening, contrast enhancement and other pre-processing to further remove the noise, enhance the image in the processor.

Thirdly, Hough transform is used to detect the circle to remove the edge image for subsequent counting. And then combined with the watershed algorithm to separate the residual feature images to extract the morphological and color characteristics of the miscellaneous and separate the grains from the grains by morphological methods. The mismatches in the current sample can be calculated by counting the mismatches in the image by using the method of “performing the eight neighborhood edge tracking on the mismatched region and then tilling the pixels inside the connected region”. After the image collection of the light box is finished, the discharge falling from the feeding table is guided by the baffle and discharged through the discharge port. The DC stepping motor is rotated for semi-circle under the control of the computer and automatically enters the next sampling cycle in order to obtain real-time grain rate of grain box.

Fourthly, multi-channel adaptive cleaning device operating status on-line monitoring and control system get 6 working parameters(the wind fan angle of under the outlet belonging to clear centrifugal fan, the wind fan angle of under the outlet, fan speed, fan inlet opening, clear sieve vibration frequency, fish scale sieve opening) and 2 performance parameters(grain cleaning loss grate, miscellaneous rate of grain from grain box) to display the status of multi-channel adaptive cleaning device operating status.

Lastly, multi-channel adaptive cleaning device operating status on-line monitoring and control system has features of abnormal data substitution, missing data padding, data denoising to eliminate the influence of random and uncertain factors on subsequent data analysis. Then, the 6 working parameters and 2 performance parameters time series is treated as an associated variable. Based on the monitoring data preprocessing, the prediction validity is used as the evaluation criterion of the prediction accuracy. The time series correlation coefficients of the performance parameters of the multivariate cleaning device are determined by the chaotic phase space reconstruction method and the reconstructed dimensions of the time series samples are combined with the gray correlation cluster analysis. Method and the Gaussian process regression model, the optimal reconstruction dimension of the time series samples of the performance parameters of the cleaning device is determined dynamically. The time series of the performance parameters of the cleaning device is decomposed into the superposition of the intrinsic instantaneous function (IMF) components by the empirical mode decomposition (EMD) using the Hilbert-Huang transform (HHT) The instantaneous characteristics of the time series of the performance parameters of the cleaning device are used to establish the adaptive prediction model of the performance parameters of the cleaning device.

The predictive value of the adaptive prediction model is selected as the sample input, and the variable fitting residual is used as the sample output. The adaptive prediction model of the performance parameters of the cleaning device is obtained by the multi-core support vector regression machine (MSVR) Of the fitting residuals for regression analysis, and further correction of the predicted value.

Multi-channel adaptive cleaning device operating status online monitoring and control system, through the multi-core support vector regression machine (MSVR) model of the revised selection of the performance parameters of the parameters of the input value for the input variable, the application Fuzzy control theory, real-time output of the corresponding control signal on the multi-channel adaptive cleaning device to select the centrifugal wind under the outlet of the wind plate I tilt angle, the next outlet wind plate II angle, fan speed, fan inlet opening, the vibration frequency of the sieve and the actuating element of each regulating mechanism of the fish scale opening, and real-time adjustment of the working parameters of the multi-channel adaptive cleaning device is completed. The performance parameters of the adaptive cleaning device are distributed within a reasonable range.

The embodiments are preferred embodiments of the present invention, but the invention is not limited to the embodiments described above, and any obvious improvement, substitution, or modification can be made by a person skilled in the art without departing from the spirit of the invention. Variations are within the scope of the present invention. 

1-10 (canceled) 11 A combined harvester and adaptive cleaning device, having a return plate, a sieve, a collecting auger, a grain auger, a grain loss monitoring sensor, a centrifugal fan, and a grain impurity ratio monitoring device, wherein: the grain loss monitoring sensor is located at a tail of the sieve; a return plate and the collecting auger are located on an underside of a tail of the sieve; a grains tank is located with the grain auger; a bottom of the centrifugal fan is flush, and is located on an underside of the sieve; and a front side of the cleaning centrifugal fan is flush with the front side of the sieve; wherein: the sieve comprises an upper jitter plate, a lower jitter plate, an adjustable scale sieve, an upper vibrating screen, a serrated tail sieve, a lower vibrating screen drive shaft, a lower vibrating screen, and a lower vibrating screen driving hydraulic motor; the upper jitter plate is located on a front side of the adjustable scale sieve which adjustable scale sieve in turn is located on the front side of the upper vibrating screen; the serrated tail sieve is located on the tail of upper vibrating screen; the power driver of adjustable scale chaff is located in the tail of sieve; and a lower shaker driving hydraulic motor is installed for driving the sieve; the lower vibrating screen drive shaft is connected to the lower vibrating screen driving hydraulic motor by a coupling and a lower vibrating screen drive shaft; wherein: the combined harvester and adaptive cleaning device further comprises of an on-line monitoring and control system, wherein an input of the on-line monitoring and control system, the grain loss monitoring sensor, and the lower vibrating screen driving hydraulic motor, and an output of the on-line monitoring and control system is connected to the power drive mechanism of the adjustable scale sieve; and, wherein: the cleaning centrifugal fan is connected for controlling the opening degree of adjustable scale sieve and the air intake and outlet direction of cleaning centrifugal tan.
 12. The combined harvester and adaptive cleaning device according to claim 11, wherein the adjustable scale sieve includes an opening adjusting mechanism which comprises a connecting piece, a first connecting rod, a direction changing element, a second link, a connecting plate, a direct current electric cylinder, a linear displacement sensor, support plate, a first connecting pin, a supporting shaft, and a second connecting pin, wherein the support plate is mounted on a side plate below a serrated tail sieve of the sieve; the support shaft has one end fixed to one side of the support plate; a direction switch is fixed to the one side of the support plate by fasteners at one end of the support shaft on the side plate below a zigzag tail curtain; a direction switch is connected to the first link through a first connecting pin; the direction changing element is connected to the first connecting rod which in turn is connected to one end of the second link through a second connecting pin; the other end of the second link is mounted with a rod end bearing; wherein the connecting pin connects the rod end bearing of the second link to the rod end bearing on the extension shaft of a DC electric cylinder; a DC electric cylinder is mounted on a support which in turn is mounted on an inside of the DC motor cylinder on the support plate which is parallel to the DC motor cylinder, and an output shaft of a displacement sensor; the output shaft of the displacement sensor is connected with an output shaft of the DC electric cylinder through the connecting plate; the rectangular plate is welded at a lower edge of the adjustable scale sieve; the first link passes through the serrated tail sieve of the sieve and is connected to the rectangular hole beneath the adjustable scale sieve by fasteners; and the DC electric cylinder is connected with the on-line monitoring and control system through a signal line, wherein the on-line monitoring and control system controls the driving direction changing member by controlling the movement of the DC electric cylinder and the first connecting rod movement to adjust opening of the adjustable scale sieve.
 13. The combined harvester and adaptive cleaning control apparatus according to claim 11, wherein the cleaning centrifugal fan comprises: a fan inlet opening adjustment mechanism; a fan blade drive; a lower outlet; a first sub-wind plate and a first angle adjusting mechanism; and a second sub-wind plate and a second angle adjusting mechanism; wherein an upper outlet is on an upper part of the upper vibrating screen, a lower outlet is comprised of the first a sub-wind plate and the first angle adjusting mechanism, and second the sub-wind plate; the first sub-wind plate and the first angle adjusting mechanism pass through the center of the upper vibrating screen; the second sub-wind plate and the second angle adjusting mechanism extend in a line intersecting the tail of the lower vibrating screen, the fan inlet opening adjusting mechanism, and the fan blade drive mechanism; and the angle adjustment mechanism and the second angle adjustment mechanism are connected to the output of the on-line monitoring and control system, respectively.
 14. The combined harvester and adaptive cleaning device according to claim 13, wherein the fan blade drive mechanism comprises a hydraulic motor, a hydraulic motor mounting plate, fan blades, a fan shaft and a bearing seat; the fan blades are uniformly mounted on the fan shaft; the fan shaft is mounted on the frame through the bearing seat at both ends; the hydraulic motor mounting plate is bolted to the frame, and to the hydraulic motor; wherein a center line of the output shaft of the hydraulic motor coincides with a center line of the fan shaft and the fan shaft and is connected with an extension shaft of the hydraulic motor; and the signal line of the hydraulic motor is connected with the on-line monitoring and control system, and the on-line monitoring and control system.
 15. The combined harvester and adaptive cleaning device according to claim 13, wherein the fan inlet opening adjustment mechanism comprises a DC electric push rod; an upper connecting hole of a half moon plate; a half-moon shield plate; and a lower connecting hole of a half moon plate; a DC electric push rod is mounted on the side wall of the upper outlet; the half-moon shield plate connects the DC electric push rod though the upper connecting hole of the half moon plate and also connects an outer wall of the blower outlet of the fan by the lower connecting hole of the half moon plate; and the DC electric push rod is connected to the on-line monitoring and control system via a signal line; and movement of the shaft is controlled by controlling the movement of the DC electric push rod around the half-moon shield plate connection hole rotation to control the fan air inlet air volume.
 16. The combined harvester and adaptive cleaning device according to claim 13, wherein the first angle adjusting mechanism comprises a first lifting ear; a stepping motor; a rotating rod; a first sub-fan; a chute; a second hanging ear; and a stepping motor support frame; wherein the stepping motor is mounted on the wall by a stepping motor support frame, and one end of a rotary lever; wherein the first lifting lug is fixed to the output shaft of the stepping motor, and the crankshaft and the other end of the rotary rod are connected to the second hanging ear via a circular slide rail, and the stepping motor; wherein the line is connected to the on-line monitoring and control system; and the stepping motor produces forward or reverse rotation under control of the on-line monitoring and control system thereby driving the first sub-wind plate achieve adjustment of an angle of the first wind plate.
 17. The combined harvester and adaptive cleaning device according to claim 13, wherein the second angle adjusting mechanism comprises a first lifting ear; a stepping motor; a rotating plate; first and second chutes; a second lifting lug; a stepping motor support frame; and a wind turbine; wherein the stepping motor is mounted on the wall by a stepping motor support frame, and one end of the rotary lever is fixed to the output shaft of the stepping motor on the output shaft of the intake motor, and the crankshaft; and the other end of the slide bar and the rotary lever is connected to the second lifting lug via a circular guide, and the stepping motor; and wherein the line is connected to the on-line monitoring and control system and the stepping motor produces forward or reverse rotation under control of the on-line monitoring and control system thereby driving the second sub-wind plate adjust an angle of the second wind plate.
 18. The combined harvester and adaptive cleaning device according to claim 11, wherein the grain impurity ratio monitoring device comprises: a grain extraction mechanism; a transport mechanism; and a machine vision section and a processor; wherein the grain extraction mechanism includes a guide groove, a bracket, a sampling drum, a hopper, a DC stepping motor, a coupling, and a connecting frame; wherein the hopper is located on a bottom surface of a guide groove, the sampling drum is supported by a bracket located within the hopper, and a surface of the sampling roller has at least one groove which is tangent to the rectangular hole when rotated, and one end of the sampling roller is connected to the DC stepping motor through a coupling; the grain transfer mechanism comprises at least a conveyor platform carrying a grain sample and a transmission capable of transporting the food product to the transport platform; the machine vision section is composed of a support plate, a light box, a light source, a processor and a visible light CCD camera; the support plate is welded to the bracket, the support plate having a vertical plate perpendicular to the conveyor platform, with a gap between the lower edge of the vertical plate and the conveyor platform being slightly greater than a height of the harvested grain of the harvester; and visible light CCD camera being located in the light box; the processor comprises a current controller; and a DC stepper motor control is connected with the image preprocessing unit; the light source is connected with the current controller, and the image is connected with the image preprocessing unit, the light source is connected with the image preprocessing unit; a preprocessing unit is used for converting the image to he measured photographed by the visible CCD camera into a binarized image for dividing the residual feature image into the binarized image and extracting the spurious Morphological and color characteristics and separating the miscellaneous grains from the grains, the collecting count units being used to count the grains in the image; the conveyor platform of the grain transfer mechanism is a feed table, which comprises a plate spring, a core coil, an armature, a base and a feeding platform, wherein, the feeding platform is fixed to a base by a plate spring which is fixed to the lower surface of the base and the feed table, respectively; a coil is connected to a current controller which is fixed under the tail of the conveyor platform; the grain extraction mechanism further comprises a warehouse wall exciter provided on a bottom surface of the hopper, and the width of the hopper coincides with the width of the feed table; and the processor is connected to the on-line monitoring and control system via a signal line.
 19. The combined harvester and adaptive cleaning device according to claim 11, wherein a distance between dither plate and the upper vibrating screen is in the range of 0.050-0.10 m; the tail of the jitter plate and upper vibrating screen is located on an upper side of the lower vibrating screen by 0.10 m to 0.15 m; and an outer width of the upper vibrating screen and the lower vibrating screen is 1.2˜1.5 m a length of the return plate is 0.8˜1.5 m, wherein the width is 1.0˜1.5 mm.
 20. A method for operating a combined harvester and adaptive cleaning device as claimed in claim 11, the steps of: during operation of a combined harvester and adaptive cleaning device, on-line monitoring and controlling using real-time access to clear the centrifugal fan under the outlet of the wind plate first tilt angle, and the outlet wind plate second angle, determining fan speed and fan vibration frequency, adjustable scale sieve opening, grain removal loss rate, and grain box grain containing rate to characterize the multi-channel adaptive cleaning device operating status; determining multi-channel adaptive cleaning device operating status by on-line monitoring for control system abnormal data on the monitoring data replacement, missing data padding, data pretreatment to eliminate random, and uncertain factors on the follow-up data; using the on-line monitoring and control system real-time access to clear the centrifugal fan under the outlet of the first wind hoard tilt, the second outlet wind plate tilt, fan speed, and fan inlet opening, a time series of the parameters of the sieve, the frequency of the adjustable scale sieve, the rate of grain removal, the time series of the grains in the grain box considered as the associated variables and based on the monitoring data preprocessing, a forecast validity is used as an evaluation criterion of the prediction accuracy, time series correlation coefficients of the performance parameters of the multivariate cleaning device are determined by a chaotic phase space reconstruction method, and the reconstructed dimensions of the time series samples are combined with a gray correlation cluster analysis; using a Gaussian process regression model, an optimal reconstruction dimension of the time series samples of the performance parameters of the cleaning device is determined dynamically; breaking a time series of the performance parameters of the cleaning device into a superposition of the intrinsic instantaneous function (IMF) components by an empirical mode decomposition (EMD) using a Hilbert-Huang transform (HHT); and instantaneous characteristics of the time series of the performance parameters of the cleaning device are used to establish the adaptive prediction model of the performance parameters of the cleaning device; selecting a predictive value of the adaptive prediction model as a sample input, and a variable fitting residual is used as the sample output; and an adaptive prediction model of the performance parameters of the cleaning device is obtained by a multi-core support vector regression machine (MSVR) fitting residuals for regression analysis, and further correction of the predicted value; and determining multi-channel adaptive cleaning device operating status, through a multi-core support vector regression machine (MSVR) model of the revised selection of the performance parameters of the parameters of the input value for the input variable, application or Fuzzy control theory, and real-time output of the corresponding control signal on the multi-channel adaptive cleaning device to select the centrifugal from under the outlet of the first wind plate tilt angle, the second outlet wind plate angle, fan speed., vibration frequency of the adjustable scale sieve and the actuating element of each regulating mechanism of the adjustable scale sieve opening, and real-time adjustment of the working parameters of the multi-channel adaptive cleaning device is completed so that the multi-performance parameters of the adaptive cleaning device are distributed within a reasonable range.
 21. The combined harvester and adaptive cleaning control apparatus according to claim 12, wherein the cleaning centrifugal fan comprises: a fan inlet opening adjustment mechanism; a fan blade drive; a lower outlet; a first sub-wind plate and a first angle adjusting mechanism; and a second sub-wind plate and a second angle adjusting mechanism; wherein an upper outlet is on an upper part of the upper vibrating screen, a lower outlet is comprised of the first a sub-wind plate and the first angle adjusting mechanism, and second the sub-wind plate; the first sub-wind plate and the first angle adjusting mechanism pass through the center of the upper vibrating screen; the second sub-wind plate and the second angle adjusting mechanism extend in a line intersecting the tail of the lower vibrating screen, the fan inlet opening adjusting mechanism, and the fan blade drive mechanism; and the angle adjustment mechanism and the second angle adjustment mechanism are connected to the output of the on-line monitoring and control system, respectively.
 22. The combined harvester and adaptive cleaning device according to claim 21, wherein the fan blade drive mechanism comprises a hydraulic motor, a hydraulic motor mounting plate, fan blades, a fan shaft and a bearing seat; the fan blades are uniformly mounted on the fan shaft; the fan shaft is mounted on the frame through the bearing seat at both ends; the hydraulic motor mounting plate is bolted to the frame, and to the hydraulic motor; wherein a center line of the output shaft of the hydraulic motor coincides with a center line of the fan shaft and the fan shaft and is connected with an extension shaft of the hydraulic motor; and the signal line of the hydraulic motor is connected with the on-line monitoring and control system, and the on-line monitoring and control system.
 23. The combined harvester and adaptive cleaning device according to claim 21, wherein the fan inlet opening adjustment mechanism comprises a DC electric push rod; an upper connecting hole of a half moon plate; a half-moon shield plate; and a lower connecting hole of a half moon plate; a DC electric push rod is mounted on the side wall of the upper outlet; the half-moon shield plate connects the DC electric push rod though the upper connecting hole of the half moon plate and also connects an outer wall of the blower outlet of the fan by the lower connecting hole of the half moon plate; and the DC electric push rod is connected to the on-line monitoring and control system via a signal line; and movement of the shaft is controlled by controlling the movement of the DC electric push rod around the half-moon shield plate connection hole rotation to control the fan air inlet air volume.
 24. The combined harvester and adaptive cleaning device according to claim 21, wherein the first angle adjusting mechanism comprises a first lifting ear; a stepping motor; a rotating rod; a first sub-fan; a chute; a second hanging ear; and a stepping motor support frame; wherein the stepping motor is mounted on the wall by a stepping motor support frame, and one end of a rotary lever; wherein the first lifting lug is fixed to the output shaft of the stepping motor, and the crankshaft and the other end of the rotary rod are connected to the second hanging ear via a circular slide rail, and the stepping motor; wherein the line is connected to the on-line monitoring and control system; and the stepping motor produces forward or reverse rotation under control of the on-line monitoring and control system thereby driving the first sub-wind plate achieve adjustment of an angle of the first wind plate.
 25. The combined harvester and adaptive cleaning device according to claim 21, wherein the second angle adjusting mechanism comprises a first lifting ear; a stepping motor; a rotating plate; first and second chutes; a second lifting lug; a stepping motor support frame; and a wind turbine; wherein the stepping motor is mounted on the wall by a stepping motor support frame, and one end of the rotary lever is fixed to the output shaft of the stepping motor on the output shaft of the intake motor, and the crankshaft; and the other end of the slide bar and the rotary lever is connected to the second lifting lug via a circular guide, and the stepping motor; and wherein the line is connected to the on-line monitoring and control system and the stepping motor produces forward or reverse rotation under control of the on-line monitoring and control system thereby driving the second sub-wind plate adjust an angle of the second wind plate.
 26. The combined harvester and adaptive cleaning device according to claim 12, wherein the grain impurity ratio monitoring device comprises: a grain extraction mechanism; a transport mechanism; and a machine vision section and a processor; wherein the grain extraction mechanism includes a guide groove, a bracket, a sampling drum, a hopper, a DC stepping motor, a coupling, and a connecting frame; wherein the hopper is located on a bottom surface of a guide groove, the sampling drum is supported by a bracket located within the hopper, and a surface of the sampling roller has at least one groove which is tangent to the rectangular hole when rotated, and one end of the sampling roller is connected to the DC stepping motor through a coupling; the grain transfer mechanism comprises at least a conveyor platform carrying a grain sample and a transmission capable of transporting the food product to the transport platform; the machine vision section is composed of a support plate, a light box, a light source, a processor and a visible light CCD camera; the support plate is welded to the bracket, the support plate having a vertical plate perpendicular to the conveyor platform, with a gap between the lower edge of the vertical plate and the conveyor platform being slightly greater than a height of the harvested grain of the harvester; and visible light CCD camera being located in the light box; the processor comprises a current controller; and a DC stepper motor control is connected with the image preprocessing unit; the light source is connected with the current controller, and the image is connected with the image preprocessing unit, the light source is connected with the image preprocessing unit; a preprocessing unit is used for converting the image to be measured photographed by the visible CCD camera into a binarized image for dividing the residual feature image into the binarized image and extracting the spurious Morphological and color characteristics and separating the miscellaneous grains from the grains, the collecting count units being used to count the grains in the image; the conveyor platform of the grain transfer mechanism is a feed table, which comprises a plate spring, a core coil, an armature, a base and a feeding platform, wherein, the feeding platform is fixed to a base by a plate spring which is fixed to the lower surface of the base and the feed table, respectively; a coil is connected to a current controller which is fixed under the tail of the conveyor platform.; the grain extraction mechanism further comprises a warehouse wall exciter provided on a bottom surface of the hopper, and the width of the hopper coincides with the width of the feed table; and the processor is connected to the on-line monitoring and control system via a signal line.
 27. The combined harvester and adaptive cleaning device according to claim 12, wherein a distance between dither plate and the upper vibrating screen is in the range of 0.050˜0.10 m; the tail of the jitter plate and upper vibrating screen is located on an upper side of the lower vibrating screen by 0.10 m to 0.15 m; and an outer width of the upper vibrating screen and the lower vibrating screen is 1.2˜1.5 m a length of the return plate is 0.8˜1.5 m, wherein the width is 1.0˜1.5 mm. 